Hammer-shaped finger pin
By designing the limiting component and fixing hole structure of the hammer-shaped pin, the problem of Kirschner wire loosening was solved, achieving more secure fracture fixation and convenient suturing operation.
Patent Information
- Application Number
- CN202422353467.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-09-26
AI Technical Summary
In existing technologies, Kirschner wires are prone to loosening during surgical treatment of hammer fingers, leading to problems such as improper fixation and limited dorsiflexion.
Design a hammer-shaped fingertip, including a needle body and a limiting member. The limiting member can be locked onto the damaged fracture site to prevent the needle body from rotating, and a fixing hole is provided on the limiting member to facilitate the insertion of sutures and improve the fixation firmness.
The design of the locking mechanism and the fixation hole enhances the fixation of the fracture site, prevents the Kirschner wire from loosening, and improves the surgical fixation effect and ease of operation.
Smart Images
Figure CN223682597U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of orthopedic medical instruments, in particular to a hammer finger large-head needle. BACKGROUND
[0002] The treatment of hammer finger includes conservative treatment and surgical treatment; the conservative treatment generally adopts splints, brace supports and the like, and the proximal interphalangeal joint is flexed by 60 degrees, the distal interphalangeal joint is slightly over-extended, and the affected finger is fixed for at least 6 weeks. However, the external fixation brace is prone to loosening, the treatment time is long, the tendon end is retracted, and the like, and the surgical treatment includes one-stage surgical repair of the original anatomical structure to restore the flexion and extension balance of the joint, and two-stage surgical repair can also be performed after the conservative treatment fails. Based on the poor effect of the conservative treatment and the improvement of the patient's expectation of the curative effect, with the development of internal fixation, the surgical treatment of the hammer finger gradually becomes the main treatment method. In recent years, the commonly used fixed tendon direct suture method, simple Kirschner wire fixation and cross Kirschner wire fixation are used. The Kirschner wire fixation is prone to the risks of loosening, fixation failure and dorsiflexion limitation due to improper fixation. In view of this, a new surgical instrument that can meet the needs is needed to be designed.
[0003] According to the related art in the above, the applicant believes that there is a technical defect that the Kirschner wire is prone to loosening in the surgical treatment process. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the above technical problems, the application provides a hammer finger large-head needle.
[0005] The hammer finger large-head needle provided by the application adopts the following technical scheme:
[0006] The hammer finger large-head needle comprises a needle body and a limiting piece located at the rear end of the needle body, the needle body is fixedly connected to the limiting piece, and the limiting piece can be clamped at the damaged fracture site to prevent the needle body from rotating.
[0007] By adopting the above technical scheme, when the fracture site needs to be fixed during the operation, the needle body part can be inserted into the fracture site for fixation, and the limiting piece arranged at this time can be clamped at the damaged position to prevent loosening caused by rotation.
[0008] Preferably, a fixing hole penetrating through the limiting piece is formed in the limiting piece.
[0009] By adopting the above technical scheme, when the needle body is inserted into two bone blocks, the fixing hole is arranged to facilitate the insertion of the suture, so that the fixation of the fracture site is more firm.
[0010] Preferably, the fixing hole is a round hole.
[0011] By adopting the technical scheme, the fixing hole is a circular hole, so as to prevent the fixing hole from wearing the corresponding suture in the process of a period of activity, and improve the overall safety.
[0012] Preferably, the limiting piece is a square long column structure.
[0013] By adopting the technical scheme, the limiting piece is a square long column structure, so as to be more convenient to fix and also more convenient to insert the suture, and improve the operation convenience.
[0014] Preferably, the needle body length is 50mm, and the limiting piece length of the square long column structure is 5mm.
[0015] Preferably, the diameter of the needle body is 1mm or 1.4mm.
[0016] Preferably, the needle body and the limiting piece are both made of stainless steel material.
[0017] By adopting the technical scheme, the limiting piece is made of stainless steel material, so as to be higher in overall structural strength and not easy to be damaged, and also prevent chemical reaction caused by long time use.
[0018] Preferably, the needle body includes a needle body front part and a needle body rear part, and the needle body front part and the needle body rear part are detachably connected.
[0019] By adopting the technical scheme, the needle body front part and the needle body rear part are set to be detachable, so as to make the front part of the needle body pass through the bone when fixed by the needle body, and then be removed after passing through, thereby facilitating secondary use of the needle body.
[0020] In summary, the present application has at least one of the following beneficial technical effects:
[0021] 1. When the needle body is inserted into two bone blocks, the fixing hole is set to facilitate the insertion of the suture, so as to make the fracture site more firmly fixed.
[0022] 2. The needle body front part and the needle body rear part are set to be detachable, so as to make the front part of the needle body pass through the bone when fixed by the needle body, and then be removed after passing through, thereby facilitating secondary use of the needle body. BRIEF DESCRIPTION OF DRAWINGS
[0023] Fig. 1 is a schematic diagram of the overall structure of the embodiment.
[0024] Fig. 2 is a schematic diagram of the connection structure of the needle body front part and the needle body rear part in the embodiment.
[0025] Explanation of reference signs: 1, needle body; 11, front part of needle body; 12, rear part of needle body; 13, threaded hole; 14, threaded rod; 2, fixed block; 21, fixed hole. DETAILED DESCRIPTION
[0026] The following will be described in detail in combination with the accompanying Figs. 1-2 The application is further described in detail.
[0027] The hammer-shaped finger needle disclosed by the embodiment of the application comprises a needle body 1, the front end part of the needle body 1 is a pointed end part, the rear end part of the needle body 1 is fixedly connected with a limiting part 2, and the needle body 1 and the limiting part 2 are both made of stainless steel material; the limiting part 2 can be a prism or other irregular shape, and the square long column structure is disclosed in the embodiment; when the surgery is performed to fix the fracture, the needle body 1 can be inserted into two bones to be fixed, at this time, the needle body 1 is continuously inserted, so that the limiting part 2 is abutted against the bones, and since the limiting part 2 is the structure of the prism or other irregular shape, the clamping and fixing effect can be achieved at this time, so that the needle body 1 cannot rotate.
[0028] The fixed hole 21 penetrating the side part of the limiting part is formed in the limiting part 2, the shape of the fixed hole 21 is not unique, and preferably, the fixed hole is a round hole, and the chamfer structure is arranged at the edges of the two ends of the round hole, so that the round hole becomes more smooth.
[0029] The length of the needle body 1 is 50 mm, and the length of the limiting part 2 in the square long column structure is 5 mm; the diameter of the needle body 1 is 1 mm or 1.4 mm; the hammer-shaped finger needle with the needle body 1 in the diameter of 1 mm is suitable for people with smaller fracture trauma sites, and the hammer-shaped finger needle with the needle body 1 in the diameter of 1.4 mm is suitable for people with larger fracture trauma sites.
[0030] 1The needle body comprises a needle body front part 11 and a needle body rear part 12, and the needle body front part and the needle body rear part are detachably connected; specifically, the threaded hole 13 can be formed in the needle body front part 11, the threaded rod 14 matched with the threaded hole 13 can be fixedly connected with the needle body rear part 12, and the threaded rod 14 is threadedly connected in the threaded hole 13, so that the needle body front part and the needle body rear part are fixedly connected with each other.
[0031] The above are the preferred embodiments of the application, and are not used to limit the protection scope of the application, so that: all equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.
Claims
1. A hallux pin, characterized in that: The application relates to a needle body (1) and a limiting piece (2) at the rear end of the needle body (1), the needle body (1) is fixedly connected to the limiting piece (2), the limiting piece (2) can be clamped on a damaged fracture site to prevent the needle body (1) from rotating; and the limiting piece (2) is a quadrangular long column structure.
2. A swan neck needle according to claim 1, characterized in that: A fixing hole (21) penetrating through the limiting piece (2) is formed in the limiting piece (2).
3. A swan neck needle according to claim 2, wherein: The fixing hole (21) is a circular hole.
4. The swan neck needle of claim 1, wherein: The length of the needle body (1) is 50 mm, and the length of the limiting piece (2) with the quadrangular long column structure is 5 mm.
5. The hallux pin of claim 1, wherein: The diameter of the needle body (1) is 1 mm or 1.4 mm.
6. The hallux pin of claim 1, wherein: The needle body (1) and the limiting piece (2) are both made of stainless steel.
7. The hallux pin of claim 1, wherein: The needle body (1) comprises a needle body (1) front part and a needle body (1) rear part, and the needle body (1) front part and the needle body (1) rear part are detachably connected.